Problem: What is the Independent Variable and Dependent Variable for this?
The universe of the study consists of children who were referred to the Ondokuz Mayis University Hospital Pediatric Blood Draw unit between July 2015 and September 2015. The sample of the study was calculated according to the number of registered patients between the ages of 8 and 12 within the period of 3 months and also according to the results of previously conducted studies. According to power analysis results, sample size was found to be 182, with an α of 0.05 and a confidence interval of 95% and error margin of 5%. Thus, the study was conducted with 200 children. The children were randomized into three groups: music groups (n = 50), video groups (n = 50), and the control group (n = 100). Numbers from 1 to 200 were randomly distributed to the three groups with no number repetition using a computer program in order to determine which child would be in which group. The inclusion criteria were as follows: between 8 and 12 years of age, literate, no mental problems, able to communicate easily, and willing to participate in the study.